gdb/observer.sh

   1 #!/bin/sh -e
   2
   3 if test $# -ne 3
   4 then
   5     echo "Usage: $0 <h|inc> <observer.texi> <observer.out>" 1>&2
   6     exit 0
   7 fi
   8
   9 lang=$1 ; shift
  10 texi=$1 ; shift
  11 o=$1 ; shift
  12 echo "Creating ${o}-tmp" 1>&2
  13 rm -f ${o}-tmp
  14
  15 # Can use any of the following: cat cmp cp diff echo egrep expr false
  16 # grep install-info ln ls mkdir mv pwd rm rmdir sed sleep sort tar
  17 # test touch true
  18
  19 cat <<EOF >>${o}-tmp
  20 /* GDB Notifications to Observers.
  21
  22    Copyright 2004 Free Software Foundation, Inc.
  23
  24    This file is part of GDB.
  25
  26    This program is free software; you can redistribute it and/or modify
  27    it under the terms of the GNU General Public License as published by
  28    the Free Software Foundation; either version 2 of the License, or
  29    (at your option) any later version.
  30
  31    This program is distributed in the hope that it will be useful,
  32    but WITHOUT ANY WARRANTY; without even the implied warranty of
  33    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  34    GNU General Public License for more details.
  35
  36    You should have received a copy of the GNU General Public License
  37    along with this program; if not, write to the Free Software
  38    Foundation, Inc., 59 Temple Place - Suite 330,
  39    Boston, MA 02111-1307, USA.
  40
  41    --
  42
  43    This file was generated using observer.sh and observer.texi.  */
  44
  45 EOF
  46
  47
  48 case $lang in
  49     h) cat <<EOF >>${o}-tmp
  50 #ifndef OBSERVER_H
  51 #define OBSERVER_H
  52
  53 struct observer;
  54 struct bpstats;
  55 struct so_list;
  56 EOF
  57         ;;
  58 esac
  59
  60
  61 # generate a list of events that can be observed
  62
  63 IFS=:
  64 sed -n '
  65 /@deftypefun void/{
  66 # Save original line for later processing into the actual parameter
  67     h
  68 # Convert from: @deftypefun void EVENT (TYPE @var{PARAM},...)
  69 # to event and formals: EVENT:TYPE PARAM, ...:
  70     s/^.* void \([a-z_][a-z_]*\) (\(.*\))$/\1:\2/
  71     s/@var{//g
  72     s/}//g
  73 # Switch to held
  74     x
  75 # Convert from: @deftypefun void FUNC (TYPE @var{PARAM},...)
  76 # to actuals: PARAM, ...
  77     s/^[^{]*[{]*//
  78     s/[}]*[^}]*$//
  79     s/}[^{]*{/, /g
  80 # Combine held (EVENT:TYPE PARAM, ...:) and pattern (PARAM, ...) into
  81 # FUNC:TYPE PARAM, ...:PARAM, ...
  82     H
  83     x
  84     s/\n/:/g
  85     p
  86 }
  87 ' $texi | while read event formal actual
  88 do
  89   case $lang in
  90       h) cat <<EOF >>${o}-tmp
  91
  92 /* ${event} notifications.  */
  93
  94 typedef void (observer_${event}_ftype) (${formal});
  95
  96 extern struct observer *observer_attach_${event} (observer_${event}_ftype *f);
  97 extern void observer_detach_${event} (struct observer *observer);
  98 extern void observer_notify_${event} (${formal});
  99 EOF
 100         ;;
 101
 102       inc)
 103         cat <<EOF >>${o}-tmp
 104
 105 /* ${event} notifications.  */
 106
 107 static struct observer_list *${event}_subject = NULL;
 108
 109 struct ${event}_args { `echo "${formal}" | sed -e 's/,/;/g'`; };
 110
 111 static void
 112 observer_${event}_notification_stub (const void *data, const void *args_data)
 113 {
 114   observer_${event}_ftype *notify = (observer_${event}_ftype *) data;
 115   const struct ${event}_args *args = args_data;
 116   notify (`echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args->\1/g'`);
 117 }
 118
 119 struct observer *
 120 observer_attach_${event} (observer_${event}_ftype *f)
 121 {
 122   return generic_observer_attach (&${event}_subject,
 123                                   &observer_${event}_notification_stub,
 124                                   (void *) f);
 125 }
 126
 127 void
 128 observer_detach_${event} (struct observer *observer)
 129 {
 130   generic_observer_detach (&${event}_subject, observer);
 131 }
 132
 133 void
 134 observer_notify_${event} (${formal})
 135 {
 136   struct ${event}_args args;
 137   `echo ${actual} | sed -e 's/\([a-z0-9_][a-z0-9_]*\)/args.\1 = \1/g'`;
 138   if (observer_debug)
 139     fprintf_unfiltered (gdb_stdlog, "observer_notify_${event}() called\n");
 140   generic_observer_notify (${event}_subject, &args);
 141 }
 142 EOF
 143         ;;
 144     esac
 145 done
 146
 147
 148 case $lang in
 149     h) cat <<EOF >>${o}-tmp
 150
 151 #endif /* OBSERVER_H */
 152 EOF
 153 esac
 154
 155
 156 echo Moving ${o}-tmp to ${o}
 157 mv ${o}-tmp ${o}